Vapor barrier foil

BILKA ALU 90 Foil is a multilayer film consisting of one layer of metalized polypropylene film, polypropylene mesh, and polyethylene film. The BILKA ALU 90 Foil is designed to perform a vapor barrier in the construction of roofs. The metalized layer reflects thermal radiation, preventing heat loss. Product is an insulating barrier to water vapor and the wind. Such membranes can be used in all ventilated and non-ventilated roofs.

Technical characteristics:

specific weight: 90g/m²± 10%;
resistance to tearing: ≥100N
temperature range: -30 : 70⁰C
Sd 50m ± 30%

Product Name	BILKA ALU 90 Foil
Package size	Rolls 1,5 m x 50 ml = 75 m²/roll
Purpose and usage	Designed to perform vapor barrier in the construction of roofs. The metallised layer reflects thermal radiation, preventing heat loss. Product is insulating barrier to water vapor and the wind.
Material:	Multilayer film consisting of one layer of metallized polypropylene film, polypropylene mesh and polyethylene film.
Caracteristics	Test method	Declared value
Roll length	EN 1848-2	50m (-0/+2%)
Width	EN 1848-2	1,5m ± 0,5%
Thickness	EN 1849-2	0,20 mm (-0,01;+0,01)
Mass per unit	EN 1849-2	90 g/m² ± 10%
Reaction to fire	EN ISO 11925-2	E Class
Watertightness (2 kPa)	EN 1928	Pass
Watertightness after artificial ageing	EN 1296; EN 1928	Pass
Resistance to tearing (Longitudinal/Transverse)	EN 12310-1	≥100N / ≥100N
Maximum tensile stress (Longitudinal/Transverse)	EN 12311-2	≥220N/50mm / ≥150N/50mm
Elongation at break (Longitudinal/Transverse)	EN 12311-2	≥12% / ≥7%
Water vapour resistance	EN 1931	2,5*10¹¹ ± 30% m²Pa/hg
Water vapour transmission properties (Sd)	EN 1931	50m ± 30%
Temperature range	----------	-30°C : 70°C
Chemical durability	EN 1847	Pass
Joint strength	EN 12317-2	NPD
Resistance to impact	EN 12691	NPD mm
Dangerous substances	-	NPD

Assemblage rules:

BILKA ALU 90 Foil should be mounted on the “hot” side of the thermal isolation of the roof or walls, aluminum side in the direction of the room. The foil can be laid in parallel or perpendicular to the roof rafters. In the case of perpendicular installation to the rafters, the installation should start along the roof’s crest and the following foil bands to be mounted under the previous layer, using a 15 cm overlap and seal the connection with the special tape. In the case of parallel installation to the rafters, mount continuously under the rooftop, using a 20 cm overlap and if possible, connect the foil strips in the rafters area and also seal with special tape. The foil should be fixed with nails or staples every 10-15 cm. After assembly, secure all fixing points, connection and foil joints with a special tape in order to prevent the infiltration of water vapor from the room into the thermal isolation layer.

Storage and warehousing rules:

Protected from direct exposure to atmospheric conditions, away from heat sources (min 1 m).

Warranty:

In compliance with the regulations in force, under the observance of the transportation conditions indicated by the supplier.

Related prescriptions, specifications:

EN 13984:2013

Possible risks, prevention prescriptions:

There is no risk of endangering health.